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anonymous

  • 4 years ago

How do I find the fraction of a number?

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  1. anonymous
    • 4 years ago
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    Here are the problems: 1/2 of 16 1/4 of 12 1/4 of 20 2/3 of 9 1/10 of 50 2/3 of 24

  2. Mertsj
    • 4 years ago
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    Remember that of means times

  3. phi
    • 4 years ago
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    I'll do the first one. \[ \frac{1}{2} \text{ of }16= \frac{1}{2}\cdot\frac{16}{1}= \frac{16}{2}= 8 \]

  4. anonymous
    • 4 years ago
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    Can you explain?

  5. anonymous
    • 4 years ago
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    How would I multiply them?

  6. phi
    • 4 years ago
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    you multiply fractions by multiplying their tops, and then multiply their bottoms. if one of the numbers is a whole number, make its bottom a 1. See example above for 1/2 * 16

  7. anonymous
    • 4 years ago
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    So you just divide the whole number by the denominator?

  8. phi
    • 4 years ago
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    in these simple problems, that is what happens. But see what happens when you get to 2/3 of 9

  9. anonymous
    • 4 years ago
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    2/3 of 9 = 3?

  10. phi
    • 4 years ago
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    2/3 of 9 is the same as \[ \frac{2}{3}\cdot \frac{9}{1} \]

  11. phi
    • 4 years ago
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    multiply tops multiply bottoms divide

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